An other publication (Hifi News & RR i think) did a comparative test between the A9, A6 and A400 some 3 or 4 years ago. If I remember correctly, the old A400, in technical terms did ok but was eclipsed by the other two both technically and in a subsequent listening test. Their opinion only of course.
I heard some of their products in the Pioneer Suite at Bristol a couple of years ago and thought it was impressive. I think it was the A9 and matching cdp. The expensive pioneer speakers surely helped too.